Yea after you have your final product that you would normally produce go to the liqur store and get everclear dissolve your extract in it put it in the freezer after 48 hours the alcohol will get cloudy. Pour it through a coffee filter and then yes you will see actual wax in the filter. Now get rid of the alcohol and smoke your extract.
That is winterizing.. Doing an etoh wash freeze 48hrs wax will precipitate out and will actually purge any butane or hexane
Hexane is the longest "light" hydrocarbon and Is better than butane, less aggressive and water soluble
Anyway that's just from my scientific perspective